Hello to all:
I have meet with a seriously problem: Our
factory set up a new storage center. But somebody do not want afford the
air-conditioning for the component and PCB materials storaging. I and someother
engineers do not think so, and afraid the solderability ,reliability and the
other problems.
Because the temperature maybe 40 degree C odd ,and the humidity will
be 90%RH.
Would you please give me some materials about such topics:
1:The storage conditons of your company and the company you know, such as
temperature,humidity, and so on. Also you can send me the standard document in
electronic field.
2: The storage limit time of different materials, packages types, and the
oxidate rate of the common metal: SnPb, Au, Ag, Pd,etc.
3: The main harmful when we can not afford good storaging condition,
especailly the details data /photo and report on this problem.
4: I know sometimes the packing materials such as plastic film, polyester,
polyethelene can not hold back the moisture, because they have
micropore.
Do you have some papers on these packing materials for this model?
Regards!
Sunny Liu
************************************************************
Dr.
Liu
Sang
Process Technology Section of Development & Piloting
Department
Huawei Technologies Compant, LTD.
Bantian,
Longgang,
Shenzhen 518129 P.R.China
Tel:
(86)-755-8780073, Fax: (86)-755-8780132
E-mail:
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